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1 | /*************************************************************************** |
2 | * Copyright (C) 2006 by Gerd v. Egidy * | |
3 | * gve@intra2net.com * | |
4 | * * | |
5 | * This library is free software; you can redistribute it and/or modify * | |
6 | * it under the terms of the GNU Lesser General Public License version * | |
7 | * 2.1 as published by the Free Software Foundation. * | |
8 | * * | |
9 | * This library is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU Lesser General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU Lesser General Public * | |
15 | * License along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | |
18 | ***************************************************************************/ | |
19 | #ifndef __LIBT2N_CONNECTION | |
20 | #define __LIBT2N_CONNECTION | |
21 | ||
22 | #include <string> | |
23 | ||
24 | namespace libt2n | |
25 | { | |
26 | ||
94247295 GE |
27 | /** @brief a connection between client and server. abstact. |
28 | */ | |
a11e19b7 GE |
29 | class connection |
30 | { | |
31 | private: | |
32 | bool closed; | |
33 | ||
34 | protected: | |
35 | connection() | |
36 | { closed=false; } | |
37 | ||
38 | std::string buffer; | |
39 | ||
40 | typedef unsigned int packet_size_indicator; | |
41 | ||
42 | packet_size_indicator bytes_available(); | |
43 | ||
44 | virtual void real_write(const std::string& data)=0; | |
45 | ||
46 | public: | |
07e98688 | 47 | virtual ~connection() |
a11e19b7 GE |
48 | { close(); } |
49 | ||
94247295 | 50 | /// is this connection closed or not |
a11e19b7 GE |
51 | bool is_closed() |
52 | { return closed; } | |
53 | ||
94247295 | 54 | /// close this connection |
a11e19b7 GE |
55 | virtual void close() |
56 | { closed=true; } | |
57 | ||
94247295 GE |
58 | /** @brief look for new data and store it in the local buffer |
59 | @param usec_timeout wait until new data is found, max timeout usecs. | |
60 | -1: wait endless | |
61 | NULL: no timeout | |
62 | @retval true if new data was found (does not mean that the received data | |
63 | is a complete packet though) | |
64 | */ | |
07e98688 | 65 | virtual bool fill_buffer(long long usec_timeout=-1)=0; |
a11e19b7 | 66 | bool get_packet(std::string& data); |
94247295 GE |
67 | |
68 | /// returns true if a complete data packet is in the buffer. retrieve it with get_packet(). | |
a11e19b7 GE |
69 | bool packet_available() |
70 | { return bytes_available(); } | |
71 | ||
72 | void write(const std::string& data); | |
73 | }; | |
74 | ||
75 | } | |
76 | ||
77 | #endif |